Improvement in machine foe making plough-clevises



T. MEIKLE.

Machine for Making Piow Clevises.

No.. 75,179. I Patented March 3, 1868.

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Letters Patent No. 75,179, dated ZlIarch 3, 1868.

IMPROVEMENT IN MACHINE FOR MAKING QPLOUGH'TGLEVISES;

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TO ALL WHOM IT MAY OQNOERN:

I Be it known that I, TnoMAs MEIKLE, of the city of Louisville, countyof Jefierson, andiState of Kentucky, have invented a new and usefulImprovement in the Art of Making Plough-Clevises, entitled ThomasMeiklcs PIough GleVis Machine; and I do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of the machine, reference being had to the accompanyingdrawings, and to the letters of reference markedthereon, to wit:

Figures 1 and 2 represent a perspective view of what is called theOliver trip-hammer.

A is the .wooden block on which the machinery rests. T T are thetreadle, on which the foot is placed, in order to strike the blow. B Bare a cast-iron swage-block placed on the wooden block A, which is casthollow, and into which the dies E andf are inserted by a projection onthe under side of same, as seen in figs. 3 and 4. F is a gauge to holdthe iron to its place while the hammer W strikes it. G is a cast-ironplate on which rest all the fixtures necessary for bending theclevis'es. a are two pieces or ribs running across the plate 0, whichhave a rebate in the inside, in which the slide-plateJ slides backwardsandforwards, H H are two frames or levers attached to the slide-plate Jby two bolts, and as the slide-plate J is moved in forward, so as toclear the rollers I I, they are thrown apart, so as to admit the clcvisto be laid into the machine, after which the slide-plate J is drawnbackQby pressing down the lever O with the 'hand, which forces the formsH H up between the rollers I I, and hence bends the clevis 2 to theproper shape, (see clevis, marked 2 in fig. 2, which shows how theclevis is formed around the centrepiece R, which is permanently attachedto the sliding plate'J.) P is a small set-screw for the purpose of beingclosed up against'the back of the clevis, in order to keep it fromspringing back in the'centre under the operntion of bending. I I aretwostationary rollers, between which the levers or forms H H are drawnback for the purpose of bending the clevis. N N are the stands whichreceive the rock-shaft m, which connects to the slide-plate J by theconnecting-link K,--and is moved backwards and forwards bythe lever 0. ZZ are the two upright pieces to which the-hammers W W are attached. III]are the cross-head, which receives the handle of the hammer. a a are arod connecting by an arm with the cross-head u of the hammer, andrunning down to the treadles T T, in order to work the hammers WW. 6bore a rod running from an arm on the crosshead U up to an imaginaryspring at the iloor of the house above, but not shown in the drawings,for the purpose of raising 'the hammers when down. V Vere the handle ofthe hammer. e and f are the dies, which are attached to the face of thehammersW W by projections on the under side, as shown in figs. 3 and 5.

, Figures 3, 4, and are perspective views of the dies, showing how theyare made, and how they are set into the swage-block and face of thehammers W W.

Figure 6 is a. view of the centre-piece R of theslide-plate J, which isattached permanently to the sliding plate J, and around which the clevisis bent.

The above is a. clear description of the drawings as referred to; andthe above machine is made of iron, except the block A and the treadles'l T, and is operated by placing the convex dies 0 and-f in the face ofany ordinary triphamrner, and the concave dies. E andfin,the-swzrge-block below, and when the hammer W is brought down the upperdie fits neatly intothe die in the swage-block, except what space istaken up by the thickness of the iron used, which is flat iron, aboutone inch wide by five-six'teenths in thickness, and is cut oif inlengths snitablefor the clevises, after which it is heated in the middleand brought out and placed in the die f, and with one stroke of thehammer W the iron is bent to' a half circle by laying it lengthwise inthe die, and a hole is punched through it at the same time by the punchK in the die, and 'after which there is a small piece of round iron,about two inches long and one-half inch indiameter, inserted in saidhole and riveted fast, after which the clevis is returned to thefii'eagain, and a welding heat is taken on the pin and that part of theclevis required, and after which it is brought out and placed'in theleft-hand groove of the die E, and is there struck one blow by the diee, in hammer W, which closes the iron on the pin and weldsit fast, androunds up that part of the clevis necessary to be rounded; after whichit is placed in the right-hand groove of die E, with the pin downwardsthrough the hole g, and is there struck one blow. with the die a, inhammer W, which rounds up perfectly that part of the clevis necessary tobe rounded, and is now ready to be bent, and in order to do so it''isonly necessary to open the lovers or forms H H of thebending-machine, so that thc clevis can be laid in it,

and after having laid it in, after which itis only necessary to takehold of thelever O with the hand, and press it down, and in doing so theforms H H aro drawn up between the rollers I I, and hence bends theclevis 2 to the proper shape, as seen by the clevis 2 in the machine, onfig. 2, and after the clevis is formed itis only necessary to raise thelever O, which throws theforms H H out from between'the rollers I Landpermits the clevis to be taken out.

The above is a full description of the operation of the maehine. New,therefore, I do not claim anything as original, or as my improvement inthe construction of what is called .the Oliver trip-hammer, as describedin the drawings, or as used in operating my improvement in the dies, andhence I have not made any model for that part of the machine, as saiddies are to he used in the fade of any ordinary trip-hammer; but

What I do claim as my improvement, and desire tosecure by LettersPatent, is

1. The combination of the sliding plate J, having a fixed centre-piece,R, attached thereto, with the compressing-levers or jaws II, rollers I,screw P, and mechanism for operating the sliding plate, substantially asand for the purpose set forth.

2. The swages and-blocks constructed as described, for use successivelyin forming a flat iron har, so that the clevis may be completed bybending it in a machine fitted for that purpose, substantially in themanner I set forth.

THOMAS MEIKLE.

Witnesses:

' WM. 0. KAIsER,

B. H. Goss.

